Trachtenberg, who co-starred with Gellar on the hit TV series, was found dead in her apartment on Tuesday. She was 39.

Sarah Michelle Gellar has paid tribute to her former Buffy The Vampire Slayer co-star Michelle Trachtenberg following her ...

Michelle Trachtenberg’s former “Buffy the Vampire Slayer” costar Sarah Michelle Gellar is looking back at their time together ...

Gellar's tribute to her late costar echoes a monologue she delivered in the supernatural drama's season 5 finale.

Sarah Michelle Gellar is paying tribute to her “Buffy” sister, Michelle Trachtenberg, who died on Feb. 26 at 39 years old.

Sarah Michelle Gellar is paying tribute to her late "Buffy the Vampire Slayer" co-star Michelle Trachtenberg after her tragic ...

Cast members of "Buffy the Vampire Slayer," "Gossip Girl" and more are remembering their co-star Michelle Trachtenberg​ after ...

Sarah Michelle Gellar, Taylor Momsen and Blake Lively are among those paying tribute to Michelle Trachtenberg, who died ...

Sarah Michelle Gellar and Michelle Trachtenberg starred in three seasons of "Buffy the Vampire Slayer" together and remained ...

"The hardest thing in this world, is to live in it. I will be brave. I will live... for you," the actress shares after her co ...

Sarah Michelle Gellar played Michelle Trachtenberg’s older sister on Buffy the Vampire Slayer for seven seasons, and their ...

Fans and friends alike are mourning the loss of Michelle Trachtenberg, who died this week at age 39. Sarah Michelle Gellar ...